This is the moment several undercover police, dressed as protesters, drag a person from the crowd at the student demo on Nov 9. As is clear to see one cop is dragging the person by the throat while others hold his arms down. [All the coppers are earing blue wristabnds]. This is clearly not in any recognised legitimate police arrest manoeuvre and certainly isn’t sanctioned by the police authorities. Names of these officers as soon as possible please. Violent scum like this should not be on our streets.